Marvel's Spider-Man: Miles Morales · Gadget upgrade
Holo-Drone: Battery Life
Increases the amount of time a Holo-Drone stays active, without a specific duration given in the guide.
How it works
Battery Life is listed as a Holo-Drone upgrade costing 12 Activity Tokens and 1 Tech Part. Its stated effect is to increase the time the drone remains active. The guide gives no added time, total duration, or other restriction for this upgrade.
Read the supporting references
Check the edition and source version for patch-specific details. Guide methodology.